When you begin to roast your own coffee, you may wonder how your roaster works to create a tasty cup of coffee. The type of coffee bean you choose will greatly influence the flavor of the coffee itself. The roasting process, however, is what makes the characteristic coffee flavor that you taste. It is a chemical process which alters and increases the flavors in the coffee beans. Learning about the roaster’s impact on coffee flavor will help you roast an even better coffee.
First, you should know that the type of coffee bean in a flavored coffee will be the most important factor in coffee flavor. The bean gets its own flavor based on where it was grown. Coffee beans also contain approximately 800 different compounds that add to their different flavors. Some flavors are also added to roasted beans before they are ground.
The roasting process itself creates that coffee taste by expanding the green coffee beans and giving them a different color, taste, smell, and density. The dried bean absorbs heat and turns yellow, and then begins to turn brown. As the beans turn to the darkest brown, the original flavors are slowly taken in by the roasting flavor itself. In the darkest roasts, you can no longer really taste the bean, but only the flavor of the roast.
The chemical process of roasting makes this coffee flavor by altering the components in the bean so that they augment the bean’s original flavor. The roast’s potential for espresso is increased when you have the greatest sweetness and aroma, and the least amount of bitterness and acidity. The sucrose in the coffee bean is caramelized, which gives coffee its dark color. This caramelizing happens around 170 to 200 degrees Celsius.
The integral part that roasting plays in the flavor of your coffee can help you decide how to roast your coffee. If you roast it while thinking about the effect of the roast, you will be able to make your coffee with the exact flavor that you want.